20886040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{769}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 54331200

約数和(自身を除く): 33445160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 97, 140, 194, 280, 388, 485, 679, 769, 776, 970, 1358, 1538, 1940, 2716, 3076, 3395, 3845, 3880, 5383, 5432, 6152, 6790, 7690, 10766, 13580, 15380, 21532, 26915, 27160, 30760, 43064, 53830, 74593, 107660, 149186, 215320, 298372, 372965, 522151, 596744, 745930, 1044302, 1491860, 2088604, 2610755, 2983720, 4177208, 5221510, 10443020, 20886040]

約数ペア:

[(1, 20886040), (2, 10443020), (4, 5221510), (5, 4177208), (7, 2983720), (8, 2610755), (10, 2088604), (14, 1491860), (20, 1044302), (28, 745930), (35, 596744), (40, 522151), (56, 372965), (70, 298372), (97, 215320), (140, 149186), (194, 107660), (280, 74593), (388, 53830), (485, 43064), (679, 30760), (769, 27160), (776, 26915), (970, 21532), (1358, 15380), (1538, 13580), (1940, 10766), (2716, 7690), (3076, 6790), (3395, 6152), (3845, 5432), (3880, 5383)]